Riccitensor
缩并的曲率张量
🗣️ 情景例句
Yes. Have you got any seats left on the 10th at 7:30 a.m. to HongKong?
是的。你们还有10号早上7点半去香港的机票吗？
One cloud is enough to eclipse all the sun.
一叶可障目。
The men took him in their boat to the castle on the coast where he was now held prisoner.
这些人用船把他送到海岸上的城堡里，如今他被囚禁在这儿。